90336081 has 16 divisors (see below), whose sum is σ = 131632128. Its totient is φ = 54651600.

The previous prime is 90336061. The next prime is 90336083. The reversal of 90336081 is 18063309.

It is not a de Polignac number, because 90336081 - 2⁵ = 90336049 is a prime.

It is a super-2 number, since 2×90336081² = 16321215060877122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90336083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19236 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (8227008).

Almost surely, 2^90336081 is an apocalyptic number.

It is an amenable number.

90336081 is a deficient number, since it is larger than the sum of its proper divisors (41296047).

90336081 is a wasteful number, since it uses less digits than its factorization.

90336081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4892.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90336081 is about 9504.5294991388. The cubic root of 90336081 is about 448.6976021150.

The spelling of 90336081 in words is "ninety million, three hundred thirty-six thousand, eighty-one".